<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="style.css">
</head>

<body>

<div id="app">
  <div v-if="books.length ==0">购物车为空</div>
  <div v-else>
  <table>
    <thead>
    <tr>
      <th></th>
      <th>书籍名称</th>
      <th>出版日期</th>
      <th>价格</th>
      <th>购买数量</th>
      <th>操作</th>
    </tr>
    </thead>
    <tbody>
    <tr v-for="(item,index) in books">
      <td>{{item.id}}</td>
      <td>{{item.name}}</td>
      <td>{{item.data}}</td>
<!--vue过滤器的使用格式：｜ 过滤器定义的方法名-->
      <th>{{item.price | showPrice}}</th>
      <td>
<!--disable属性为true时，按钮置灰-->
        <button @click="decrement(index)" :disabled="item.count<=0">-</button>
        {{item.count}}
        <button @click="increment(index)">+</button>
      </td>
      <td>
        <button @click="removeHandle(index)">移除</button>
      </td>
    </tr>
    </tbody>
  </table>
    <h2>总价:{{totolprice | showPrice}}</h2>
</div>
</div>
<script src="../js/vue.js"></script>
<script src="main.js"></script>
</body>
</html>